The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Oct. 22, 2019
Filed:
Apr. 23, 2019
Etsuji Hayakawa, Tokyo, JP;
Toyoki Tanaka, Tokyo, JP;
Etsuji Hayakawa, Tokyo, JP;
Toyoki Tanaka, Tokyo, JP;
MITSUMI ELECTRIC CO., LTD., Tokyo, JP;
Abstract
A control apparatus is used in a display apparatus. The control apparatus includes a laser element; a temperature sensor configured to detect a temperature of the laser element; a laser driver configured to drive the laser element; and a laser control unit configured to control a driving current to be supplied to the laser element by the laser driver, such that an optical output value of the laser element converges to a target optical output value. The laser control unit determines an initial driving current value that causes an initial optical output value to be output from the laser element, based on temperature characteristic data of the initial driving current value, and a detection temperature of the laser element detected by the temperature sensor, and controls the driving current to start from the determined initial driving current value.